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化学概念是将化学现象、化学事实经过比较、综合、分析、归纳、类比等方法抽象出来的理性知识,它是一种更高级的思维形态,反映着化学现象及事实的本质,是化学学科知识体系的基础。概念获得是通过比较、对照、分析正、反例证的属性,提出假设,验证假设,最终获得概念。这种教学改变学生的学习方式,为学生积极参与、大胆探索、认真思考、清晰表达及与他人交流,提供时间与空间,让学生真正参与知识的建构。本文描述用概念获得理论让学生建构化学核心概念。
The concept of chemistry is a rational knowledge abstracting from chemical phenomena and chemical facts by means of comparison, synthesis, analysis, induction and analogy. It is a more advanced thinking form that reflects the essence of chemical phenomena and facts and is a knowledge of chemistry The foundation of the system. Concept is obtained through the comparison, contrast, analysis of positive and negative examples of the attributes, make assumptions, verify the assumptions, and ultimately get the concept. This teaching changes students ’learning styles, takes an active part in the students’ participation, boldly explores, thinks hard, articulates and communicates with others, provides time and space, and enables students to truly participate in the construction of knowledge. This article describes the concept of using theory to get students to build the core concepts of chemistry.